Alex flips a fair coin 20 times. Bert spins a fair coin 21
times. Bert wins if he gets more heads than Alex, else Alex wins.
Note that Alex wins if there is a tie. What is the probability that
Bert wins?
It is a (well known?) fact that if you spin a coin, its p(heads).5
Are we supposed to know what it actually is or can we assume it to be .5?
-Jer
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Posted by Jer
on 2004-05-20 14:08:34 |
flip vs spin
